Tâmega Hydroelectric Dam
Country: Portugal
Client: Iberdrola
Scope: 1,158 MW power capacity, full EPC contract; assembly of transformers, control system and low voltage system, auxiliary power supply and the lighting installation
Dates: 2023

With nearly a century of experience as a hydro power contractor, Omexom supports public and private operators in designing, building, modernizing, and maintaining hydroelectric infrastructures worldwide. Leading the way in renewable electricity generation, hydropower is the world’s third-largest source of energy after coal and natural gas and accounts for 14% of total worldwide electricity production.
As a fully integrated EPC contractor, Omexom provides end‑to‑end solutions for new hydropower plant construction as well as refurbishment and modernization programs. Leveraging synergies within the VINCI Group, including civil works capabilities, we deliver efficient, safe, and high‑performance hydro power systems tailored to each client’s needs.

Our teams work independently while partnering with leading turbine manufacturers to ensure optimal system integration, including advanced reactive power compensation solutions.
We provide innovative and custom‑designed technical solutions for hydropower plants, from preliminary studies to detailed design.
We offer reliable long‑term plant performance supported by proactive maintenance strategies and operational excellence.
We are your partner for hydro plant modernization programs to upgrade aging facilities, optimize production, and ensure compliance with the latest standards.
Integration, installation, and commissioning of electro‑mechanical systems essential to hydropower plant efficiency.
With 570 business units across the world, we have strong connections with local suppliers and contractors, each offering unique capabilities. As a global EPC contractor, our collaborative approach ensures you benefit from the most capable team for your project.
Operating in 36 countries and working closely with local suppliers, we are committed to the highest standards of quality, health and safety, and environmental performance, delivering sustainable, efficient, and secure energy solutions worldwide